CHICAGO -- A Loyola student was walking on campus near Simpson Hall, a dorm that houses about 400 students, just before 1 a.m. last Wednesday when she was approached from behind and groped by an unknown male on a bike.

University officials said the student was able to break free and contact campus safety. Calling the incident “criminal sexual abuse,” Loyola is asking people to be on the lookout for the unknown man, who was last seen fleeing northbound on Winthrop Avenue toward Sheridan Road.

The offender is described as a male 20-25 years old, approximately 5’7” and 160 pounds. He is said to have medium-length hair and a black beard. He was wearing a black headband, t-shirt, cargo shorts and a black and gray backpack. The bike was light gray. A description of the offender's race or ethnicity has not yet been provided.

Loyola students who received a university alert about the incident said they’re surprised it happened on a pretty safe campus.

“Usually it’s safe, so I don’t feel like I’m not safe when I’m around here. So I was surprised when that happened,” said freshman Marissa Abes.

“I’m glad that they decided to alert everyone else cause so many times it happens and people take it and they keep their head down, and we can’t do that. It’s not how we stop people from being assaulted,” said Loyola sophomore Eliza Marley.

Anyone with information is asked to call Chicago Police or Loyola Campus Safety at 773-508-6039.